Affiliation: | [1]Key Lab for Optical Astronomy, National Astronomical Observatories, Chinese Academy ofSciences, Beijing 100012, China;fyang@LAMOST.org [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China [3]Department of Physics, Applied Physics-and Astronomy, Rensselaer Polytechnic Institute, 1108th Street, Troy, NY 12180, USA [4]American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024,USA [5]Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China [6]Department of Astronomy & Kavli Institute of Astronomy and Astrophysics, Peking University,Be~iing 100871, China [7]University of Heidelberg, Landessternwarte, K6nigstuhl 12, D-69117 Heidelberg, Germany [8]Institute of Astronomy and Astrophysics, Academia Sinica, EO. Box 23-14 I, Taipei 106, China [9]Apache Point Observatory, EO. Box 59, Sunspot, NM 88349, USA [10]Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China [11]Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 2100-08, China |